Metal cutting and forming machine.



No. 885,548. PATENTED APR. 21, 1908. G. A. TURNBULL. METAL CUTTING AND FORMING MACHINE.

APPLICATION FILED SEPT. 28, 1903.

4 SHEETS-SHEET X.

HU HHHUHHUHHHHD UUHHUHUUUHNI -PATENTED APR. 21, 1908.

G. A. TURNBULL. METAL CUTTING AND PORMING MACHINE.

APPLICATION FILED SEPT. 28, 1903,

4 SHBBTS-SEBET 2.

A/AJnSMM/J No. 885,548. I PATENTED APR. 21, 1908. G. A. TURNBULL. METAL CUTTING AND FORMING MACHINE.

APPLICATION FILED SEPT. 28, 1903.

4 SHEETS-SHEET 3.

PATENTED APR. 21

G. "A. TURN'BULL. METAL CUTTING AND FORMING MACHINE.

APPLICATION FILED SEPT. 28, 1903.

4 SHEETS-SHEET 4.

GEORGE A. TURNBULL, CHICAGO, ILLINOIS.

METAL CUTTING AND FORMING- MACHINE.

To all whom it may. concern:

Be it known that I, GEORGE A. TURNBULL, a citizen of/the United States, and a resident of Chicago, Cook county, Illinois, have in- 'vented certain new anduseful Improvementsin Metal Cutting and Forming Machines; and I do hereby declare that the following is a full, clear, and eXact descri tion of the same, reference being had to t e accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. Y

This invention relates to improvements in cutting and forming machines and is der signed more particularly to cut and form.

metallic sheets preparatory to expanding the same in making eX anded metal.

To make expan ed metal it is usual to out i' the sheet to provide a plurality of relatively yshort slits arranged staggering on themachine a distance apart equal to the desired width of the web o the metal when expanded; Ordinarily the cutting of the sheet has been done by means of a reciprocating knife bar. In my invention set forth in United States Patent No. 664,193, thecutting, forming (andl expanding of the sheet is done by a continuous rolling process, the cutting and forming apparatus of which is the subject of the resent invention andis an improvement on tiie cutting and forming apparatus therein 1set forth.

The invention rovides very powerful though simple ang accurate cutting and forming means and owing to the construction and arrangement of theknives and the forming means adapted to operate at a much higher rate of speed than has been possible in constructions heretofore. revised. Owing to the construction and arrangement of theoperating-means the co'st for repairs on the machine is also greatly reduced.

The obj ect of the invention is primarily to provide a machine adapted to cut and form the metallic sheet at a higher rate of speed than has heretofore been possible, and also with reater accuracy. And it is also an object o? the invention to rovide means for adjusting the knives ra( ially onthe rolls to compensate for the wear of the same through use, and to enable any of the knives to be quickly removed and others accurately adj usted in place thereof when desired.

Specification of Letters Patent. A Application led September 28, 190.3. Serial No. 174,897.

y fragmentary top plan view of thesame.

Patented Api-i1 21, 1-90'8.

The invention consists in the matters here-- inafter described and more fully pointedl out and defined in the appended claims.

In the drawings: Figure 1 is a fragmentary top plan viewof a machine for exanding meta provided with cuttin and if) means embodyinr my inventi n. Fig. 2 is a lan view of the s as been slitted or cut and partly formed.

eet of metal after the same.

orming Fig. 3 is an enlar ed .fragmentary transverse f Fig.' 4 is a Fig. 5 is a side elevation of one of the carrying rings. Fig. 6 is a plan or ed e view of the same. Fig. 7 is an enlarge( fragmentary plan view of one of the carrying rings and a s acing ring. Fig.8is'a similar fragmentary p an view which illustrates a modified form of the carrying rings. Fig. 9 is an end elevation of one of the cuttin rolls. Fig. 10 isa fra mentary longitudinaIsection of a cutting rol with the knives, carrying rings and spacing rings removed and illustrating one`arrangement of the adjusting means. Fig. 11. is a central lon itudinal section of a cutting roll showing a s ightly different arrangement of the adjusting neans. Fig. 12 'is a frag-I mentary vertical section taken through the rolls. Fi 13 `is an enlarged fragmentar section o an upper and lower cuttin rol Fig..14 is a fragmentary section of the ower cutting roll showin a modified form thereof. As shown in said drawings z-A and A1 indicate the side members of the frame of any desiredmaterial and construction, Journaled transversely of said side members are the horizontal shafts B-BTB2- 3- 4-B5 of which the shafts B-B2 B4 are journaled on the u per side of the frame and the shafts B- 3--B5 are journaled on the lower side of the same, each pair comprising an upper and a lower shaft and driven op ositely by intermeshing, gears as shown in ig. 1, of which only the gears on section of one of t ie cutting rolls.

the upper shafts are shown'and indicated respectively by b-b-b2 andwhich engage the complemental gears on the lower shaft theref by. causing said shaft to rotate oppositely.

b3 is ya pinion secured on the main driving shaft C and intermcshes with the (fears 'b -b On said driving shaft is securecI a driving pulley b5 in a familiar manner; A pinion b "similar to the pinion b3 is journaled on a stud shaft which is secured on the frame member A A in position for said pinion to be engaged lby the gears b-b2.

' Rigidly secured on theI shafts B and B and which the upper rolls C-C comprise each as shown a central roll or core c-c. secured on its shaft by means of a feather be as shown in Fig. 11 and on each side of which is provided the clamping collars (i2-c3 of which the collar c2 is provided with an elongated hub c4 shrunk on the shaft and provided with set screws adapted to positively engage the same upon the shaft. Each of said shafts is screw threaded at the end carrying the collar c3 and jamb nuts 05-66 are secured thereon in position to force said collars 02-03 and 'the central rolls c-c into binding contact as shown in Fig. 11 and a plurality of bolts cs extend through said collars and core and bind the same rigidly together. Each of said rolls or cores c-c is grooved longitudinally on the periphery providing a plurality of longitudinal ilat.bottomed seats adapted to receive adjusting wedges D and d or d and correspond in number with the number of longitudinal rows of slitting knives adapted to be arranged on the periphery of said cutting rolls and which, of course, will vary with the size ofthe roll-and the length of the slit to be made thereby. Apertures are provided in said collars registering with the seats in said rolls and adapted to receive the point of said wedges, of which as shown the wedge member is provided with ianges adapted to engage'on said collar and acts to afford an inclined surface corresponding with the taper of the wedge d so that the outer bearing surface thereof is parallel with the axis of the roll. Seated on sa-id rolls are carrying rings E, each of which as shown in 5 is notched onV the inner side' to engage over the wedges and intermediate said notches is provided vwith radial inwardly directed projections e which bear upon the rolls between the wedges as shown in Fig. 3.

' illustrated in Figs. 4, 5, 6.and 7 are also provided on'each of the faces thereof withoutwardly directed wedge shaped projections or stops e of which the-adjacent sides of adj acent stops are parallel and between which it the removable and adjustable knives F. Said knives or cutters F, as shown, are of a thickness equal -to the distance between the alternate slits to be formed in the sheets and) are transversely concave on the face and provided on opposite sides with cutting edges f as shown in Figs. 4, 11 and 13, so that each of said knives provides simultaneously two slits in i the sheet operated on thereby. Said knives are of uniform width and the 'front and rear edges thereof are parallel and fit between tlle stops or projections e on the carrying ring and near the bottom or lower edge j of said knives the edges taper inwardly to a The carrying forms essaies -bottom bearing surface adapted for positive engagement on said adjusting wedges d so that when said knives are -in position as shown inV Fig. 8 the same itvery closely .be-A- tween and have positive bearing at the front and rear edges on the projections or stops e1 and at the bottom rest on said wedges.

Means are xprovided for rigidly clamping the knives in place comprising convexly curved spring plates f2 of a width to t closely between the adjacent front and rear edges rof adjacent knives and which' are rigidly secured to they projection e between adjacent knives by means of set screws f3 which act to spring said plates inwardly rigidly jambing or locking the knives in place.

As shown in Fig. 4 a spacing ring E equal in width to the thickness of the cutting face of l the 4knives lis secured between each of the peripheral rows of knives on each roll. Said ring is similar to the carrying ring E with the exception that it lacks the projection or stops e and the plain sides thereof bearagainst said projections on the carrying ring and afford one of the side wallsy for the knife pockets as shown in Fig. 4.

Obviously, if preferred, the carrying rings may be constructed as indicated by E2 in Fig. 8 as having projections e2 onrone side only thereof. When so constructed the spacing rings may be omitted inasmuch as a plurality of said carrying rings when placeds as shown in Fig. 8 with the projections of one carrying ring bearing against the plain side of the adjacent carrying ring afford knife pockets similar to those before described` Asshown, the knives F on each of the outting rolls C and C are staggered with each other so that each of said rolls aords half the slits in each of the sheets fed therethrough, those on the second set of rolls providing the alternate slits in the sheet which are staggered with respect to thoseformed by the first pair. Beneath each of said rolls C and C and journaled on the shaft B and B3 respectively are peripherally groovedrolls (l2-C3 in which the peripheral grooves are disposed as shown in Figs. 3, 12 and'lS, to register with the cutting edges of the Iknives F and provide angular cutting shoulders between which and the edges of the knivesthe sheets are engaged as they pass between the rolls. be cast or constructed solid, theperipheral grooves turned orv otherwisev constructed therein in a familiar manner, as shown, however, the same are constructed of a plurality of plates K .rigidly bolted together upon the cores cl2-d3 of the lower roll by means of the bolts 7c which pass' therethrough and are held in place by the clamping collars K and K2. The alternate plates in said rolls are of less 'diameter than the adjacent plates thus providing the shoulders before described. As shown parallel -stripping. bars g extend A shoulders of the lower rolls may be formed in sections as shown in Fig. 14 and rigidly bolted together by bolts k2.

At thel rear-end of the machine are forming rolls` G--G rigidly secured on the shaftsB* and B".

equal to the diameter of the cutting rolls and are each provided on their periphery with projections or teeth g which are V shaped or and force the cut edges downwardly between the center or uncut portions, thus supported, thereby forming the sheet as shown in Fig. 2 at I-I preparatory to the expansion. The forming rolls may be constructed in any desired manner and each of the projections may b e formed integrally therewith or rigidly but removably secured thereon as desired.

The operation is as followsz-The sheet when 'fed between the first pair of cutting rollsbetween the strippers g is engaged by therolls and passed therethrough at any desired peripheral speed and the alternate slits formed therein. Said strippers acting to directthe sheet into the next pair of' rolls where -the alternate slits are cut which are staggered or break joints with the first cut slits and midway between the same as shown in Figs'. 1 and 2. wardly the ends of the saine are engaged by the forming rolls G and G and the uncut portions between longitudinally alined slits arev supported upon the projections on the lower rollwhile the corresponding projections of the upper roll engage in the slits on each side of said supported portion forcing the cut edges downwardly and forming a succession of V shaped or round/ed keys indicated as h. Obviously any desired means may be provided for adjusting the bearings of the respective shafts either longitudinally or Asy `vertically with respect to each other. shown, however, in Figs. l and 12 said bearings M are adapt-ed to move longitudinally of the frame members, and are slotted for adl justment upon the bolt-s m, and beneath said bearings is inserted` thin plates m or metal or other desired material to give the proper vertical adjustment. If preferred the expanding mechanism may be attached to the rear of the present machine as show-n in the drawings Aand thel sheet-s successively cut,fornied Said-forming rolls are in diameter As thesheet passes out-A and expanded as it passes .through the machine, or, if preferred, a separate and distinct machine for expanding the metal may be employed after the same has been cut and formed by the expanding mechanism herein described.

Obviously'the knives each being seated in a complemental recess in the roll and rigidly secured therein upon the adjusting wedges as before' described are not only firmly held when in operation, but are also readily released for removal should it be desired to sharpen, repair or replace defective or inj ured knives for perfect ones. So too, if preferred, should any knife or knives, or the cutting edge of any knife or knives, be worn sufficiently to not entirely cut or slit the sheet, the same may be adjusted outwardly by driving the wedges d-rl inwardly thus forcing the knives outwardly to the desired degree.

In the construction shown in Fig. 11 in which a single wedge d is used in each seat in the roll c the seat is inclined complemental to the wedge so that the outer face of said wedge is parallel with the axis of the roll. In this construction the operation is as before described, said wedge when driven inwardly acting to move the knives radially outward and if retracted, permits the same to .be forced radially inward by the operation of the machine. Obviously instead offlat faces for contact faces of the wedges the outer surfaces of said wedges, if preferred, may be turned to correspond with the curvature of the roll in which instance the inner or bearing edge of the knife may be curved complementally therewith to afford a secure seat thereon.

Obviously while I have described niy invention as adapted'for use for expanded` metal machines the same may be useful and desirable for many other purposes and I do not desire to be limited' to the exact description or use or method of adjustment of the knives herein set forth as it is obvious that the meansfor adjusting the knives on the rolls may be varied from that herein described and many other details of construction may be varied without departing from the principles of this invention.

I claim as my invention iej 1. In a machine of the `class described, a pair of cutting rolls having secured on the circumference thereof a plurality of rows of circumferentially alined independently removable knives arranged out of contact with each other and adapted to form a pair of parallel slits and locking means carried on the roll and adapted to engage a plurality of said knives.

. 2. In a machine of the class described, a plurality of pairs o f cutting rolls and coacting, independently removable means on each pair of cutting rolls adapted to slit 'a sheet of 4forming slits alternating with those formed bv the knives on the other pair.

3. A roll for the purpose specified having secured thereon, in circumferential rows, a. plurality of knives, each comprising a plain blank of metal and having a plurality of parallel cutting edges` adjacent knives longitudinally of the roll being seated a distance apart equal to the width of said knives. 4. A roll for the purpose specified having engaged on the circumference thereof a plurality of rings separated from each by a lateral projection, a plurality of relatively short independent knives arranged between said rings, each having double cutting edges, said knives being arranged in alinement at intervals a art both circumferentially and longitudinaill r of the roll. j

5. In a machine of the class described, a plurality of pairs of cutting rolls, one of the rolls of each pair having removably secured thereon relativelyT short broad cutting knives, a pluralityT of cutting edges on each knife adapted to form short parallel slits at intervals apart longitudinally said knives being arranged in parallel circumferential rows and the adjacent longitudinally disposed knives of each roll being arranged a dist ance apart equal to the width of the knives, the knives of the second cutting roll being arranged to cut "between and also out side those of the'firstroll.

'6. n a machine of the class described the combination with adjustable rolls of a plurality of double edged knives thereon adapted to form a plurality of short parallel overlapping slits in a sheet of metal, resilient locking means engaging circumferentially adjacent knives and a pair of forming rolls adapted to en age the slit sheet and form V shaped ridges between the slits.

7. In a machine designed to slit and form a metallic sheet, a plurality of pairs of cutting rolls having radiallyT projecting double edge knives thereon adapted to form onehalf the slits in the sheet resilient locking means carried, on each roll intermediate said knives and engaged therewith and forming rolls adapted to engage the slit sheet and to form V shaped ridges therein between the Webs.

8. The combination with a cutting roll of a plurality of removable double edged knives arranged at intervals circumferentially thereon, a spring engaged between adjacent knives and adapted to lock the same in the roll and apair of forming rolls each having secured thereon similarly formed projections arranged staggering with each-other and in alinement with the cutting edges of the cutting knives.

9. In amachine of the class described, a cutting roll formed of a plurality of annular plates rigidly secured upon a shaft, alternate of relatively short l plates recessed on the periphery, knives removably secured in said recesses, a plurality j of parallel cutting edges on each knife curved concentric with said roll and a coacting roll grooved complementally with the sides of the knives and adapted together therewith to form a slitted sheet.

1t). ln device of the class described, a cutting roll comprising a plurality of plates rigidlysecured 'in contact on a shaft, alternate plates being notched peripherally, knives rigidly secured in said notches, a )lurality of cutting edges 4on each knife, a plate of smaller diameter between the knife bearl ing plates and a plurality of parallel connected bars extending between rolls intermediate of the knives.

11. A machine of the class described comprising a roll having secured in ieripheral alinement a plurality of parallel rows of knives, each of said knives being relatively broad and adapted to cut on each edge of the same, a grooved roller provided With angular shoulders to coact with the cutting edges of the knives and connected parallel bars or rods extending between the rolls and between said knives and acting to prevent the material operated upon from bending.

12. ln a machine of the. class described, the combination With the roll, of a-plurality of notched rings thereon, removable double edged knives seated therein,` adjusting Wedges movably engaged beneath said knives and resilient means carried on the roll adapted to engage said knives in place.

13. In a machine ofthe class described the combination with a plurality of pairs of cutting rolls together acting to cut a plurality of short overlapping parallel slits in a sheet of metal or the like, of forming means adapted to open the slits and to bend the port-ions between the slits and means for adjusting said forming means longitudinally of t-he machine and vertically thereof.

14. The combination with a plurality of pairs of cutting rolls, each adapted to cut a proportional part of a plurality of relatively ,short parallel overlapping slits longitudinally of the sheet, of means for stripping the cut `sheet from the cutting rolls and vertically and longitudinally adjustable forming rolls thereon acting to open the slits and to bend the metal between the slits.

15. ln a machine of the class described, a pair of cutting rolls, a plurality of bands thereon each provided Withvlateral projections adapted to abut against adjacent bands, circumferentially arranged knives engaged between said bands, a part of said knives be- .ing provided with double cutting edges and means adapted to adjustsaid knives radially of the roll.

16. In a machine of the class described, a

adapted to engage the slit sheet and means pair of cutting rolls, a plurality of rings thereon provided with lat-eral projections adapted to space said rings equidistantly and a plulplain blank of metal, concave on its upper side to provide parallel cutting edges.

17. In a machine of the class described a pair of cutting rolls each having secured thereon independently removable knives and adjusting means acting to simultaneously adjust a pluralityof said knives.

` 18. In a machine for the purpose specified,

'a pair of cutting rolls, a plurality of longitudinally and circumferentially arranged knives thereon 'each comprising a plain blank of metal, resilient means adapted to engage the ends of said knives and engage them in place and means adapted to adjust said knives radially and in lines longitudinally of the r'oll.

19. -In avm'achine of the class described, a plurality of pairs of cutting rolls and coacting independently removable knives on each l pair of cutting rolls provided with parallel cutting edges and adapted to slit a sheet of metal into a plurality of relatively short slits, each pair of said rolls forming alternate slits and means movable beneath the knives adapted to adjust the knives radially.

20. In a machine of the class described, thecombination with a frame, of a plurality of pairs of coacting rolls journaled thereon, a plurality of removable double edged knives arranged on said rolls equal distances apart and adapted to cut a sheet of metal into a plurality of short slits arranged staggering with each other and a uniform distance apart, Wedge members seated inthe periphery of the rolls adapted toengage said knives and adjust them radially and resilient locks' carried on said rolls adapted to engage said knives in place.

21. A cutting roll provided on its periphery with removable radially adjustable cutters arranged in circumferential lines thereon, the cutters of each line -being arranged a distance apart, resilient means adapted to enhavin gage adjacent cutters and lock them in place means movable. longitudinally ofthe rolladaptedto adjust said cutters radially, said cutters beingcojncave transversely and dduble cutting parallel edges concentric wlth the roll.

22. A knife for the purpose specified, comprising a.l relatively short block of steel hav- Ilng its upper surface curved concentrically andits lower surface tapered from the end l ,inwardly and its endslying approximately `in'planes of the radius of the upper surface,

said block having straight plane ends and parallel cutting edges and being transversely concave on its cutting face.

.23. A roll for the purpose specified having Varranged thereon a plurality of equally spaced rings, a plurality of, knives intermewidth lthereon a plurality of independent knives each having a plurality of cutting edges and arranged in parallel circumferentia rows, adjacent knives longitudinally of the rows bein0r seated a distance a art equal to the of the knives and adjacent knives circumferentially of the rolls being seated a uniform distance apart and means engaging the ends of the knives and acting to positively engage said knives to the rolls.

25. A roll having removably secured thereon a plurality of knives each having a plurality of cutting edges and arranged in parallel circumferential rows, adjacent knives longitudinally of the rows being seated a distance apart equal to the width of the knives and adjacent knives circumferentially of the rolls being seated a uniform distance apart and resilient means engaging adjacent knives and rigidly engaging the same to the roll.

26. A roll having removably secured thereon a plurality of knives each having a plurality of cutting edges and arranged in parallel circumferential rows, adjacent knives longitudinally of the rows being seated a distance apart equal to th width of the knives and adjacent knives circumferentially of the rolls., being seated a uniform distance apart and resilient means engaging adjacent knives andy rigidly engaging the same to Vthe roll.

27. In a machine of the class specified cutting rolls each having transverse rows of knives arranged around the periphery thereof said knives in each row being independently removable.

28. In a machine of the class specified cutting rolls having independently removable cutting knives extending entirely across the periphery thereof and arranged suitable distances apart transversely and longitudinally.

29. In a machine of the class described cutting rolls and a plurality of independently removable knives secured thereto and spaced suitable distances apart transversely thereof and arranged around the periphery of the rolls.

30. In a machine of the class described cutting rolls and independently removable knives secured thereto arranged in rows transversely and circumferentially of the rolls and the knives on one roll cutting alternately and staggering with the knivesin an adjacent roll. 31. In a machine of the class described cutting rolls, independently removable cuttransverse rows across the periphery of the rolls and independent means for simultane ously adjusting each row of knives to vary the cutting position.'

33. In a device of theclass described the combination with cutting rolls, independently removable knives secured to the periphery thereof inv transverse rows, means for adjusting the knives in a row simultaneously and rolls having shoulders coacting with the knives on the cutting rolls.

34. In a device of the class described the combination with cutting rolls, independently removable knives secured to the peripherythereo in transverse rows, means for adjusting the knives in a row simultaneously, rolls having shoulders coacting with the knives on the cutting rolls and removl '35. In a device of the class described the combination with cutting rolls, independently removable knives secured to the periphery thereof in transverse for adjusting the knivesin a row simultaneously, rolls having shoulders coacting'with the knives on the cutting rolls, removable resilient means securing vthe knives in posi` tion, 4 means extending between the teeth and means extending betweenthe shoulders GEORGE TURNBULL.

Witnesses able resilient means securing position.

the knives in A. C. ODELL, W. W. WITHENBURY.

rows, means for preventing bending ofthe metal in cut- 

